The conversion of the Nikon - the Pentax menu was a bit difficult, somehow I do Pentax almost too easy to use, but now comes the more quickly out of hand.
Very commendable is the screen where you can select a magnification for focusing. Still praiseworthy is the durability of the battery's: unbelievable how long the hold out.
All in all I am happy to have taken the step and consider whether I should sell my Nikon lenses together. I simply no longer use: too heavy, too noisy, unsatisfactory picture quality if you have ever tried a Pentax. A Nikon D700 would be apart from the weight safely great, but unfortunately too expensive. So then loaded a new, lightweight Pentax at an affordable price, with old lenses from and into the rain and high ISO areas. I do not regret it for a minute.